There is no way for the web server to get the OS user ID of the user accessing the web page (or if there is, there shouldn't be - you'd have a leak of information security hole). You could probably pursuade your script to somehow go get the NT user ID on the client's box, but that's opening a whole new can of worms security-wise. There be dragons there.

You can however use other user ID's, such as the HTTP basic authentication user id (the one you fill in when you go to a web page that asks for your username and password with a pop up box - usually). Look to BrowserUK's post above for information on how to get that userID using the cgi module. You also have to configure your web server for basic authentication. See the Apache documentation.

CU
Robartes-